diff --git a/advlabdb/models.py b/advlabdb/models.py
index 36cd3bf..b74e73d 100644
--- a/advlabdb/models.py
+++ b/advlabdb/models.py
@@ -414,11 +414,14 @@ class Semester(db.Model):
 
     __table_args__ = (db.UniqueConstraint(label, year),)
 
-    def customInit(label, year, oldSemester, transferParts, transferAssistants):
+    def customInit(label, year):
         if label not in ("WS", "SS"):
             raise DataBaseException("The semester label has to be WS or SS!")
 
-        semester = Semester(label=label, year=year)
+        return Semester(label, year)
+
+    def customInit(label, year, oldSemester, transferParts, transferAssistants):
+        semester = Semester.customInit(label=label, year=year)
 
         if transferParts:
             semester.transferPartsFrom(oldSemester)
diff --git a/testDB.py b/testDB.py
index 5a61ed7..9eda92c 100644
--- a/testDB.py
+++ b/testDB.py
@@ -17,8 +17,8 @@ with app.app_context():
     db.session.add(program2)
     db.session.add(program3)
 
-    sem1 = Semester(label="SS", year=22)
-    sem2 = Semester(label="WS", year=22)
+    sem1 = Semester.customInit(label="SS", year=22)
+    sem2 = Semester.customInit(label="WS", year=22)
 
     db.session.add(sem1)
     db.session.add(sem2)